Shock absorber



Patented Jan. 16, 1923.

PATENT OFFICE.

PETER DU FORD. OF ONTARIO, OREGON.

SHOCK ABSORBER.

Application filed. April 16, 1921, Serial No. 461,992. Renewed June 22,1922. Serial No. 570,183.

To all whom *r'f' may concern:

lie it known that I, PETER DU Form, a citizen of the United States. anda resident of Ontario, in the county of Malheur and Htate of Oregon.have invented a new and Improved Shock Absorber, of which the followingis a full, clear, and exact description.

This invention relates to shock absorbing devices and is particularlydesigned and intended for use in connection with the Front or rearsprings oi a motor vehicle, the same being in the nature of animprovement over mv ctr-pending applications respectively tiled May20th, 1919. Serial No. 298,339, February 4th, 1920, Serial No. 356,117,and September 14th, 1920, Serial No. 410,161.

The invention contemplates and has for one of its principal objects theprovision of a simple. inexpensive and highly eflicient shockal'isorbing device which may be readily associated with any standardvehicle, without the necessity of materially altering the same.

The invention further contemplates the provision of a shock absorbingdevice which operates to effectively reduce to a minimum the shocks andjars due to inequalities in the road which are ordinarily imparted tothe vehicle.

Another object of the invention resides in the provision of means forretarding rebound action of the shock absorbing ele ments whereby thedeflection and return of parts to their normal position is graduallyaccomplished.

A further object of the invention resides in the provision of a. shockabsorbing device which includes means operable to carry ordinary stress,and means for limiting the operation of said means whereby the heaviershocks and j :1 rs are carried by the usual elliptical vehicle spring.

W'ith these and other objects in view, the invention resides in thenovel construction. combination and arrangement of parts set forth inthe following specification. pointed out in the appended claims andillustrated in the accompanying drawings in which:

Figure 1 is a side elevation of the shock absorbing device illustratingits association with the chassis and vehicle spring.

Figure. 2 is a horizontal sectional view taken approxinnitely on theline 2 -2 of Fig. 1.

Figure. 3 is a transverse sectional view taken approximately on the line3- 3 of Figure 1.

l igure 4- is a detail plan view of the supporting lever in the rear endof the vehicle spring.

Figure 5 a detail view of the ing and connecting link therefor.

Figure 6 a detail view of the chassis bracket from which the supportinglink is suspended.

Referring to the drawings by characters of reference, it) designates thefront end of the chassis oi the vehicle, ll the front axle and 12 theusual elliptical spring which is secured medially to said axle.

The shock absorbing device comprises the means 1-; for associating therear end l-loi' the spring 12 with the chassis nd the means 15 forassociating}; the front end of said spring thcrc with. The means l3includes the chassis bracket it; having upstanding side flanges IT and:1 depending aperture knuckle IS. The bracket is secured to theunderside o t' the chassis with the side flanges disposed at. oppositesides thereof to embrace the same. A U-shaped connecting and supportinglink 15) having spaced aperturcd upper extremities 22o disposed atopposite sides of the knuckle Is is provided a pin or bolt 2i passingthrough the aligned apertures in the lznuekle and extremities Forpivotally associating said link with the chassis bracket. The lower endot the link is transversclv apertured and is rcceirwl b tween the spacedside arms ol' the supporting lever 22. a pivot pin or bolt: 23 beingadapted to be.passed tl'irough said side arms and the aperturedextrei'nity of the link for plvotaily connecting the lever thereto. Theouter spaced extremities 2% are apertured to align with the eye formedat the inner extren'iity ll of the vehicle spring to rcceive thetransverse connectiug bolt The inner extremities 26 of the Side arms ofthe supporting lever are apertured to receive the lower extremity of acoiled expansion spring 27. the upper extrcmity m" which is secured tothe chassis. liv this arrangement the inner extremity or end oi thevehicle spring i2 is yieldahly supported from the chassis for limitedmovements in any direction in a vertical plane. the spring 27 serving toabsr'u'b and carry the light r hocks and jars imparted to the spring i2.

supporttit The means in inehnles a bell ('Iililli lever :Eo lillilli!horizcoiuai amt vertirml arms ill and I32 ilisposetl snbstznitiaily at aright angle te each other unit provided with a liorivental l'ornzirillvprojecting extension The arm l is provided with a vertieal rm Ill havin;a transverse apertnre therein aiil ear being ileshg neil to be reeeiveilbetween the torn'anl bil'urt-ateil extremity ol thr- .lliifiHlS.transverse pivot bolt i: passe? through the hil'nreaterl extremity ofthe elite 11ml the apertnreil ear -'lto i'nhrnin lllt' bell rranlt leverto the rhassis. The ear is proviii-wl with an integral h1g3? n'liisi i1ll if [llttl to ro-ait with the under- :iile f the rh ssis E'or lmiting the upward swinging on ement ot' the arm 31 A t'tlllttl r giisionspring 3T is ronneeterl at its opposite ends to the chassis iilltl theinner i'ree rxtreniir x of the arm :11 to norn'mltv e\ei't a tension torlifting illlll yieltlahlv supporting the inner extremity of sairl arm.lhe termini etnl of the vehicle spring 12 is pivoted to the extension 21by the bolt 3% which is passed through the usual eye l =rmml on thesame. it bearing member 3.) having an upstanding: lnyaring arm stt)bil'urrateil at its lower extrelnitv ii to straihlle the l'orvvartlextremity oi the ehassis. the bolt llfi passing through apertitrestherein to t-oiistitute a eonnnon secur- P mean thw-"i'or in aihlitionto tunetioniv, it :i ot or 't'nh-ruin to! the bell i'runlt lt'Rti' H.hrnpper l'ree t'llll ol' the arm 2%) is bii nrrutwl :nni the nppr-rextremity 4?] ol the bearing rm is also bii nrrateti. ii lasb otinriniling a tf Ylllltltt' it anti :1 plunger it Hit respeetiwlrunner-tell to the bearing" arm xtremity l Illlii the lever nrni e);-itlllll 3; as at lb and it. The bearing arv'n E l ninl the leirr arm tare respertivelv lll'tli'lllttl \vith rirt'nlar ihpressions or rere ses4 in \vhirh the opposite eml eon-- iolntions of a t'tllltil ronipressionspring it are 'lt't'tlit l. 13 this arrangement it will be noticl thatthe upward movement of the tornaril eiul ol the v hicle spring 12 Willtend to Firing the vertirul arm 32 or the hell. rrnnli hrerltill\\'tii'tll Hill the horizontal arm Iii theieoi' ihin'nn'nrill thusexpanding the llilt': ii tiilti compressing the spring; the same timethe irilnn ger if n ill be thr 1t into the e vliniler H against theimnpression oi' the llllltl (air or llillllti eontaineii therein toi'ttili'tl the movement of the le er and absorb a portion of the shorlt.The return nmvenient oi the parts to normal will liltevvisr be retardedby the lash pot. When the rompression otthe spring 19,. the expansion ofthe spri 3T an-il the retarding union ot the hash pot i rearh avonibineil li--l lll!li't in exress til thrvehiele sprin re sistzinrtnthe latter will. be brought into play :unl the remaining; loail will berarrieil by the springs 137, it the this]: pot anti the vehirle spring.

it will thus be seen that a highly efficient amt eon;parativelv simpleshoelt absorbing lleviee is lll'tnitlttl \vhieh inehnles ample means forBarr Vim): the various loatls to which it will probably be subjerteel.it should be i'urther noted that the shoek absorbing (lGVltU atlorelsmeans for assoriatinpthe vehirle spring with the chassis which permitsot limitetl relative movements betnren the vehirle spring; anti chassisin any direction in a vertieal plane, the ileviee servinp; to etl'eetthe return o? suiil parts to normal relative position.

\Yhile there has been illustrated anal lit" stl'llletl a single amtpreferred embodiment of the invention, no limitation is neeessariiIHtHlL to the. preeise strnrtnral rletails herein exhibited, as it is tohe understood that variations anel niotliiieations \vhirh properly fallwithin the seope of the appended (lllllllS may be resorted to whenl'onnil expedient.

I claim:

1. The eonihination with a vehiele spring anti elnissis of a shockabsorbing device :alapterl to operatively assoriate the same eomprisingmeans for yiehlingly supporting the inner enrl of the vehiele springfrom the ehassis 'lor limiterl movements in any direction in vertiraipining a bell crank iever i'nlrrnmeil to the rhassim a roileil expansionspring "nllllt't'tillgf the tree entl ot' the. ver' tirai arm ol' sailllever with the rh'assis, a toilet! rompression spring interposed be'tween the tree eml of the \ertit'al arm ainl the rhassis. means torretarding the movement ol' saitl lever in either :lirertion, aml anextension from the lever at the jnnt'tnre ol' the arms to vvhieh thetorvvarrl eml ol' sairl vehic'le spring is pivotally i-onnerteil.

2. The rombinavtion with a vehiele (-hassis and spring of a shoel;absorbing ileviie adapted to assoeiate the spring with saiil ehassis,mnnprisinn a lever pivoted between its entls to the chassis. meansetninet'tetl respectively to the rear enrl ot the lever and the chassis*l'or exerting a hit on saiil entit the opposite enrl of said leverhaving from nertion with the torwaril eml of the vehicle spring; an armextending 'v'ertieallv from the lever between the forward eni ainl itspivot, means interposed between sahl arni anti the rhassis foreti'ertin; relative separation therelietvveen, means between the l'reeeml ot' saitl arm ttlltl the ehassis l'or retard ng: movement of thelever in either direction tllitl means for yielilingl i' supporting theopposite encl oi the vehirle spring from the rhassis for movement in aniliret-ti n in vertiral plane Hit)

